Proyectos de Subversion Moodle

Rev

| Ultima modificación | Ver Log |

Rev Autor Línea Nro. Línea
1 efrain 1 
<?php
2 
 
3 
/**
4 
 * SCSSPHP
5 
 *
6 
 * @copyright 2012-2020 Leaf Corcoran
7 
 *
8 
 * @license http://opensource.org/licenses/MIT MIT
9 
 *
10 
 * @link http://scssphp.github.io/scssphp
11 
 */
12 
 
13 
namespace ScssPhp\ScssPhp\SourceMap;
14 
 
15 
/**
16 
 * Base 64 Encode/Decode
17 
 *
18 
 * @author Anthon Pang <anthon.pang@gmail.com>
19 
 *
20 
 * @internal
21 
 */
22 
class Base64
23 
{
24 
    /**
25 
     * @var array<int, string>
26 
     */
27 
    private static $encodingMap = [
28 
 
29 
        1 => 'B',
30 
        2 => 'C',
31 
        3 => 'D',
32 
        4 => 'E',
33 
        5 => 'F',
34 
        6 => 'G',
35 
        7 => 'H',
36 
        8 => 'I',
37 
        9 => 'J',
38 
        10 => 'K',
39 
        11 => 'L',
40 
        12 => 'M',
41 
        13 => 'N',
42 
        14 => 'O',
43 
        15 => 'P',
44 
        16 => 'Q',
45 
        17 => 'R',
46 
        18 => 'S',
47 
        19 => 'T',
48 
        20 => 'U',
49 
        21 => 'V',
50 
        22 => 'W',
51 
        23 => 'X',
52 
        24 => 'Y',
53 
        25 => 'Z',
54 
        26 => 'a',
55 
        27 => 'b',
56 
        28 => 'c',
57 
        29 => 'd',
58 
        30 => 'e',
59 
        31 => 'f',
60 
        32 => 'g',
61 
        33 => 'h',
62 
        34 => 'i',
63 
        35 => 'j',
64 
        36 => 'k',
65 
        37 => 'l',
66 
        38 => 'm',
67 
        39 => 'n',
68 
        40 => 'o',
69 
        41 => 'p',
70 
        42 => 'q',
71 
        43 => 'r',
72 
        44 => 's',
73 
        45 => 't',
74 
        46 => 'u',
75 
        47 => 'v',
76 
        48 => 'w',
77 
        49 => 'x',
78 
        50 => 'y',
79 
        51 => 'z',
80 
        52 => '0',
81 
        53 => '1',
82 
        54 => '2',
83 
        55 => '3',
84 
        56 => '4',
85 
        57 => '5',
86 
        58 => '6',
87 
        59 => '7',
88 
        60 => '8',
89 
        61 => '9',
90 
        62 => '+',
91 
        63 => '/',
92 
    ];
93 
 
94 
    /**
95 
     * @var array<string|int, int>
96 
     */
97 
    private static $decodingMap = [
98 
        'A' => 0,
99 
        'B' => 1,
100 
        'C' => 2,
101 
        'D' => 3,
102 
        'E' => 4,
103 
        'F' => 5,
104 
        'G' => 6,
105 
        'H' => 7,
106 
        'I' => 8,
107 
        'J' => 9,
108 
        'K' => 10,
109 
        'L' => 11,
110 
        'M' => 12,
111 
        'N' => 13,
112 
        'O' => 14,
113 
        'P' => 15,
114 
        'Q' => 16,
115 
        'R' => 17,
116 
        'S' => 18,
117 
        'T' => 19,
118 
        'U' => 20,
119 
        'V' => 21,
120 
        'W' => 22,
121 
        'X' => 23,
122 
        'Y' => 24,
123 
        'Z' => 25,
124 
        'a' => 26,
125 
        'b' => 27,
126 
        'c' => 28,
127 
        'd' => 29,
128 
        'e' => 30,
129 
        'f' => 31,
130 
        'g' => 32,
131 
        'h' => 33,
132 
        'i' => 34,
133 
        'j' => 35,
134 
        'k' => 36,
135 
        'l' => 37,
136 
        'm' => 38,
137 
        'n' => 39,
138 
        'o' => 40,
139 
        'p' => 41,
140 
        'q' => 42,
141 
        'r' => 43,
142 
        's' => 44,
143 
        't' => 45,
144 
        'u' => 46,
145 
        'v' => 47,
146 
        'w' => 48,
147 
        'x' => 49,
148 
        'y' => 50,
149 
        'z' => 51,
150 
 
151 
        1 => 53,
152 
        2 => 54,
153 
        3 => 55,
154 
        4 => 56,
155 
        5 => 57,
156 
        6 => 58,
157 
        7 => 59,
158 
        8 => 60,
159 
        9 => 61,
160 
        '+' => 62,
161 
        '/' => 63,
162 
    ];
163 
 
164 
    /**
165 
     * Convert to base64
166 
     *
167 
     * @param int $value
168 
     *
169 
     * @return string
170 
     */
171 
    public static function encode($value)
172 
    {
173 
        return self::$encodingMap[$value];
174 
    }
175 
 
176 
    /**
177 
     * Convert from base64
178 
     *
179 
     * @param string $value
180 
     *
181 
     * @return int
182 
     */
183 
    public static function decode($value)
184 
    {
185 
        return self::$decodingMap[$value];
186 
    }
187 
}